Device for supporting sickle-blades when sharpening.



C. LUNDGREN.

DEVICE FOR SUPPORTING SICKLE BLADES WHEN SHARPENING.

APPUCATION FILED M AR. 7. I91?- Patented Sept. 3, 1918.

CARL LUNIDGREN, OF GREELEY, .COLQRADO.

DEVICE FOR SUPPORTING SICKLE-BLADES WHEN SHARPENILTG.

Specification of Letters Patent.

Application filed March 7, 1917. Serial No. 153,098.

To all whom it may concern Be it known that I, CARL LUNDGREN, a citizen of the United States, residing at Greeley, in the county of Weld, State of Colorado, have invented a new and useful Improved Device for Supporting Sickle- Blades when Sharpening; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same.

The invention relates to an improved device for supporting sickle or scythe blades or the like when performing the sharpening operation upon them.

The principal object is to provide a support for implement blades which are to be sharpened that will permit the blades to be moved freely across the face of a grindstone and at the same time relieve the operator of the weight of the blade being sharpened.

A further object is to provide a support in close proximity to the grindstone and to provide a swinging arm pivoted to the support, the swinging arm having means for holding the implement blade.

A further object is to make the means for holding the implement blade slidable with respect to the swinging arm.

A further object is to make the connection between the swinging arm and the blade to be sharpened flexible.

The objects of this invention are attained by providing a post for setting in the ground and attaching to this post a support that holds a swinging arm. The upper edge of this swinging arm performs the function of a track on which a movable hanger is mounted, a flexible connection being attached to the hanger and connected with a clamp that holds the implement blade to be sharpened. It is intended that the grindstone for performing the sharpening operation shall be brought near the post which supports the swinging arm.

The particular structure which embodies this invention may be susceptible of certain changes that would work to its advantage in practical application and the right is claimed to make -any changes that practice may show to be advisable, provided such changes do not depart from the spirit of the subj oined claims.

A uniform system of designating the various parts obtains in all the several figures of the drawings, wl'ierein: i

Figure 1 is a side elevation of the invention, showing an implement blade being held ready for sharpening.

Fig.2 is a central longitudinal sectional view.

Fi Fig. i. Fig. 1. Fig. Fig. 4. Fig. Fig.1.

The numeral 1 represents a post which is designed to be set in the ground and from this post the arm 2 projects, the arm being 3 is a sectio n on the line 3-3 of 4 is a section on the line 4-4 of 5 is a section on the line 5+5 of 6 is a section on theli ne 6-6 of attached to the post by means of screws 3 which penetrate the post after passing through the flange 4. A brace 5 gives additional support .to the arm 2,.being attached to the post 1 by a screw 6 and to the arm 2 by a suitable rivet 7 which passes through the arm 2 and through the upturned ends 8 which are disposed on diametrically opposite sides of the arm 2.

A T is attached to the arm 2 by having its leg 9 threaded thereon, the cross leg 10 having a smooth interior that will permit the rod 11 to turn therein. The rod 11 is slotted on its upper end and the rail 12 sets in this slot, a suitable rivet 13 attaching the rail and the rod together. The rivet 14 attaches the channel members 15 to the rod 11 near its bottom. These channel members 15 are also attached to the rail 12, these members acting as a brace between the rod 11 and the rail 12 and being attached to the forward end of the rail 12 by a rivet 16. Suitable spacers 17 intervene between the channel members 15 and the rail 12, so that the former may be maintained parallel throughout their length.

A hanger 18 straddles the rail 12 and is provided with the rollers 19 which are capable of turning on the studs 20 that are fixed in the opposite walls of the hanger. These rollers 19 engage the upper edge of the rail 12 and make possible the movement of the hanger longitudinally along the rail. Between thelower ends 21 of the hanger, a pin 22 pivotally supports the hook 23 to which a chain 24 connects, the chain terminating in an eye 25 whose shank 26 is threaded into Patented Sept. 3, 1918.

the clamp 27. The clamp 27 is provided with a slot 28- which is entered by the threaded shank 26 which operates to hold the implement blade 29 firmly in the clamp, so that it may be operated upon by the grindstone.

/Vhen the device is to be used a grindstone is brought near the post 1 and. where the rail 12 can be conveniently swung over it. The sickle blade or cuttter bar to be sharpened is then attached in the clamp 27 by having theshank 26 screwed down upon it. The weight of the sickle blade is then supported by the hanger 18 and the blade can, be conveniently moved across the face of the grindstone. The longitudinal move ment of which the hanger is capable permits blades of various widths to be sharp ened without changing the position of the grindstone and also enables the blade to be drawn away from the stone for examination. The pivotal mounting of the rail 12 enables it together with the hanger 18 to have its position changed, if for any reason it is desirable to change the position of the grindstone.

The link chain 24: makes possible the va riation of the height of the clamp 27. Any desirable link may be made to engage the hook 23, so as to bring the blade to be sharpened into the desired position for contact with the grindstone.

What is claimed is:

The combination. with a support having a lateral arm, of a T detachably threaded on said arm, a rod loosely mounted in the cross leg of the T a rail having one end connected to the upper end of the rod, a hanger straddling said rail and provided with rollers to engage the rail, a hook connected to the lower end of the hanger, a pair of channel brace members spaced in parallelism and connected between the outer end of the rail and the lower end of the rod spacing means between the outer ends of the channel members and the rail, for spacing said brace members whereby the hook and the lower end of the hanger may be guided therebetween, and means suspended from the hook and carrying a device for clamping a blade, whereby a blade may move across a sharpening stone.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CARL LU NDGREN.

lVi tuesses G. E. Bone, E. F. COTTINGHAM.

Copies of this patent my be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

